fixed project creation without a label provider

pycs/frontend/endpoints/projects/CreateProject.py

@@ -55,9 +55,8 @@ class CreateProject(View):
             return abort(404, "Model not found")
 
         # find label provider
-        if label_provider_id is None:
-            label_provider = None
-        else:
+        label_provider = None
+        if label_provider_id is not None:
             label_provider = LabelProvider.query.get(label_provider_id)
 
             if label_provider is None:
@@ -92,7 +91,7 @@ class CreateProject(View):
             name=name,
             description=description,
             model_id=model.id,
-            label_provider_id=label_provider.id,
+            label_provider_id=label_provider_id,
             root_folder=str(project_folder),
             external_data=external_data,
             data_folder=str(data_folder)